Who has to pay after a code 286 denial?

Who owes depends on the details. The letters in front of the number matter: CO (contractual obligation) usually means an in-network provider must absorb it, while PR (patient responsibility) means the plan says you owe it.

How long do I have to appeal?

It depends on your coverage: 180 days for most employer and marketplace plans, 120 days for Original Medicare, about 90 days for Medicaid (varies by state), and only 65 days for Medicare Advantage. Set your deadline clock before you do anything else.

Denial code 286 · CO-286 / PR-286 · translated

Denial code 286: what it means — and how to fight it

Denial code 286 (shown on your EOB as CO-286 or PR-286) means: “Appeal time limits not met.” In plain English: They say your appeal itself was too late. Late doesn't always mean over — good cause, notice defects, and state rules can reopen it.

medium appealability Who owes depends on the details

What they're really saying

“Appeal time limits not met.”

They say your appeal itself was too late. Late doesn't always mean over — good cause, notice defects, and state rules can reopen it.

Your odds

Worth fighting — many of these get fixed.

Defective denial notices restart clocks more often than people think.

Fewer than 1 in 100 denied claims are ever appealed. When people do appeal, roughly 4 in 10 win the first round — and independent external review overturns 40–50% of what reaches it.

How to appeal a code 286 denial

Decode. You just did — this page is step one.
Set your clock. 180 days for most employer and marketplace plans, 120 for Original Medicare, ~90 for Medicaid, only 65 for Medicare Advantage.
Urgent? If this is care you still need, call and request an expedited appeal — they must decide within 72 hours.
Find the original denial letter and check its date and whether it explained your appeal rights. Check when (and whether) the denial notice was actually sent and whether it explained appeal rights — missing or defective notice can invalidate the deadline. Ask about good-cause exceptions and file a commissioner complaint in parallel.
Send it certified. Letter plus evidence, keep copies of everything.
Escalate. Denied again? Independent external review — a doctor who doesn't work for your insurer decides.

Do it in minutes, free

The AppealClock tool translates your denial, drafts your appeal letter, computes your exact deadline — and watches the clock so you don't have to. No account. Your medical details never leave your device.

Start your appeal & set your clock →

Common questions

What does denial code 286 mean?: They say your appeal itself was too late. Late doesn't always mean over — good cause, notice defects, and state rules can reopen it.
Can I appeal a CO-286 or PR-286 denial?: Yes. Appealing is free and it is your legal right. For this code the odds are medium: Defective denial notices restart clocks more often than people think. Fewer than 1 in 100 denials are ever appealed — insurers count on silence.
Who has to pay after a code 286 denial?: Who owes depends on the details. The letters in front of the number matter: CO (contractual obligation) usually means an in-network provider must absorb it, while PR (patient responsibility) means the plan says you owe it.
How long do I have to appeal?: It depends on your coverage: 180 days for most employer and marketplace plans, 120 days for Original Medicare, about 90 days for Medicaid (varies by state), and only 65 days for Medicare Advantage. Set your deadline clock before you do anything else.